CTICasesFlail Posterior Mitral Valve Leaflet
Imaging findings
Coronary CT angiography and echocardiography in a non-ischemic female patient with acute dyspnea show a flail posterior mitral valve leaflet with severe regurgitation, left atrial enlargement, and thin/missing papillary muscle connections. Coronary arteries were normal.
Key takeaways
A flail mitral valve leaflet is characterized by hypermobility of the leaflet tip extending into the left atrium during systole, usually due to chordae tendineae rupture. While commonly caused by myocardial infarction, non-ischemic causes (e.g., collagen vascular disease) also occur.
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